What is an ATX Case?

The full name of ATX in English is AT Extended. Due to the irregularity of the Baby AT motherboard market and the AT motherboard structure is too outdated, in order to regulate the motherboard structure, Intel Corporation released a standardized structure of the PC in 1995-the extended AT structure, that is, ATX motherboard standard, and the chassis derived from ATX specification is also called ATX chassis. Compared to the Baby / Mini-AT structure, the layout of the ATX has changed considerably: The Baby-AT uses a horizontal structure chassis, and the I / O interface is located on the narrow side (24.4cm) of the motherboard. Structure, and uniformly transfer the I / O interface to the wide side (30.5cm) and make it into the form of "backplane". In addition, ATX also stipulates that the hot air of the CPU radiator must be exhausted, which not only strengthens the heat dissipation, but also reduces the dust accumulation in the chassis. Based on the ATX specification, ATX, Micro ATX, NLX, WTX, MiniATX, and Flex-ATX specifications are derived. At present, the chassis sold on the market are mainly ATX and Micro ATX chassis. The Micro ATX case is small in size and limited in scalability, and is only suitable for users who do not have high requirements for computer performance. The ATX case is much stronger than the Micro ATX case in terms of heat dissipation and performance expansion. ATX is still the mainstream in the market.

ATX case

Briefly describe the differences in ATX / Flex-ATX / Micro-ATX / Mini-itx motherboard specifications

the first,

Motherboard for ATX case and Micro ATX (1 sheet)

A chassis of one structure can only have one motherboard corresponding to it, but if the chassis is backward compatible, then a chassis of one structure can match more than one motherboard. For example, the ATX case is backward compatible with the Micro ATX case, so the MicroATX motherboard can also be installed on the ATX case.

The ATX standard motherboard design specifications are 12 inches (305mm) wide and 9.6 inches (244mm) high. With the further optimization of the motherboard design, the specifications of the motherboard can be reduced to 11.2 inches (284mm) * 8.2 inches (208mm) of Micro-ATX . Therefore, when choosing ATX chassis, you can choose the motherboard of the above two specifications for assembly.